package com.xiaojiang.controller;

import com.xiaojiang.pojo.Result;
import com.xiaojiang.pojo.User;
import com.xiaojiang.service.UserService;
import com.xiaojiang.utils.JwtUtil;
import com.xiaojiang.utils.Md5Util;
import com.xiaojiang.utils.ThreadLocalUtil;
import jakarta.validation.constraints.NotEmpty;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * 功能：
 * 作者：小江
 * 日期：2024年08月01日
 */
@RestController
@RequestMapping("/user")
@Validated
public class UserController {

    @Autowired
    private UserService userService;
    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    //@RequestMapping("/register")
    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$")String password){
        //查询用户
        User u = userService.findByUsername(username);
        if (u==null){
            //用户名没有占用，就注册
            userService.register(username,password);
            return Result.success();
        }else {
            //占用
            return Result.error("用户名已被占用!");
        }

    }

    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$")String password){
        //查询用户是否存在
        User loginUser = userService.findByUsername(username);
        if (loginUser==null){
            return Result.error("用户名错误");
        }
        //如果存在，密码是否正确
        if (Md5Util.getMD5String(password).equals(loginUser.getPassword())){

            Map<String,Object> claims = new HashMap<>();
            claims.put("id",loginUser.getId());
            claims.put("username",username);
            String token = JwtUtil.genToken(claims);
            //把token存储到redis中
            ValueOperations<String, String> stringStringValueOperations = stringRedisTemplate.opsForValue();
            stringStringValueOperations.set(token,token,1, TimeUnit.HOURS);
            return Result.success(token);
        }

        return Result.error("密码错误");
    }

    @GetMapping("/userInfo")
    public Result<User> userInfo(/*@RequestHeader(name = "Authorization") String token*/){
//        Map<String,Object> map = JwtUtil.parseToken(token);
//        String username = (String) map.get("username");

        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        //根据用户名查询用户信息
        User user = userService.findByUsername(username);
        return Result.success(user);
    }

    @PutMapping("/updateInfo")
    public Result updateInfo(@RequestBody @Validated User user){

        userService.updateInfo(user);
        return Result.success();
    }

    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @NotEmpty @URL String avatarUrl){
        userService.updateAvatar(avatarUrl);
        return Result.success();
    }

    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String,String> params,@RequestHeader("Authorization") String token){
        //获取参数
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");

        //参数校验
        //判空
        if (!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要参数！");
        }
        //两次密码是否一致
        if (!newPwd.equals(rePwd)){
            return Result.error("两次密码不一致，请重新填写");
        }
        //输入的新密码必须满足5到16个连续非空白字符的字符串
        if (!newPwd.matches("^\\S{5,16}$") || !rePwd.matches("^\\S{5,16}$")){
            return Result.error("密码必须是5到16个连续非空白字符的字符串！");
        }
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User loginUser = userService.findByUsername(username);
        if (!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
            return Result.error("原密码填写错误！");
        }

        //调用service完成密码更新
        userService.updatePwd(newPwd);
        //删除redis中对应的token
        ValueOperations<String, String> stringStringValueOperations = stringRedisTemplate.opsForValue();
        stringStringValueOperations.getOperations().delete(token);

        return Result.success();
    }

}
